"use client";

import React from "react";
import { formatPlanShort } from "@/lib/utils";
import {
  DevicePhoneMobileIcon,
  WifiIcon,
  SignalIcon,
  ClockIcon,
  CheckCircleIcon,
  ExclamationTriangleIcon,
  XCircleIcon,
} from "@heroicons/react/24/outline";
import type { SimDetails } from "@customer-portal/domain/sim";

interface SimDetailsCardProps {
  simDetails: SimDetails;
  isLoading?: boolean;
  error?: string | null;
  embedded?: boolean; // when true, render content without card container
  showFeaturesSummary?: boolean; // show the right-side Service Features summary
}

export function SimDetailsCard({
  simDetails,
  isLoading,
  error,
  embedded = false,
  showFeaturesSummary = true,
}: SimDetailsCardProps) {
  const formatPlan = (code?: string) => formatPlanShort(code);
  const isEsim = simDetails.simType === "esim";
  const hasVoice = Boolean(simDetails.hasVoice ?? simDetails.voiceMailEnabled);
  const hasSms = Boolean(simDetails.hasSms);
  const voiceMailEnabled = Boolean(simDetails.voiceMailEnabled);
  const callWaitingEnabled = Boolean(simDetails.callWaitingEnabled);
  const internationalRoamingEnabled = Boolean(simDetails.internationalRoamingEnabled);
  const sizeLabel = simDetails.size ?? simDetails.simType;
  const ipv4Address = simDetails.ipv4;
  const ipv6Address = simDetails.ipv6;
  const getStatusIcon = (status: string) => {
    switch (status) {
      case "active":
        return <CheckCircleIcon className="h-6 w-6 text-green-500" />;
      case "suspended":
        return <ExclamationTriangleIcon className="h-6 w-6 text-yellow-500" />;
      case "cancelled":
        return <XCircleIcon className="h-6 w-6 text-red-500" />;
      case "pending":
        return <ClockIcon className="h-6 w-6 text-blue-500" />;
      default:
        return <DevicePhoneMobileIcon className="h-6 w-6 text-gray-500" />;
    }
  };

  const getStatusColor = (status: string) => {
    switch (status) {
      case "active":
        return "bg-green-100 text-green-800";
      case "suspended":
        return "bg-yellow-100 text-yellow-800";
      case "cancelled":
        return "bg-red-100 text-red-800";
      case "pending":
        return "bg-blue-100 text-blue-800";
      default:
        return "bg-gray-100 text-gray-800";
    }
  };

  const formatDate = (dateString: string) => {
    try {
      const date = new Date(dateString);
      return date.toLocaleDateString("en-US", {
        year: "numeric",
        month: "short",
        day: "numeric",
      });
    } catch {
      return dateString;
    }
  };

  const formatQuota = (quotaMb: number) => {
    if (quotaMb >= 1000) {
      return `${(quotaMb / 1000).toFixed(1)} GB`;
    }
    return `${quotaMb.toFixed(0)} MB`;
  };

  if (isLoading) {
    const Skeleton = (
      <div
        className={`${embedded ? "" : "bg-white shadow-lg rounded-xl border border-gray-100 hover:shadow-xl transition-shadow duration-300 "}p-6 lg:p-8`}
      >
        <div className="animate-pulse">
          <div className="flex items-center space-x-4">
            <div className="rounded-full bg-gradient-to-br from-blue-200 to-blue-300 h-14 w-14"></div>
            <div className="flex-1 space-y-3">
              <div className="h-5 bg-gradient-to-r from-gray-200 to-gray-300 rounded-lg w-3/4"></div>
              <div className="h-4 bg-gradient-to-r from-gray-200 to-gray-300 rounded-lg w-1/2"></div>
            </div>
          </div>
          <div className="mt-8 space-y-4">
            <div className="h-4 bg-gradient-to-r from-gray-200 to-gray-300 rounded-lg"></div>
            <div className="h-4 bg-gradient-to-r from-gray-200 to-gray-300 rounded-lg w-5/6"></div>
            <div className="h-4 bg-gradient-to-r from-gray-200 to-gray-300 rounded-lg w-4/6"></div>
          </div>
        </div>
      </div>
    );
    return Skeleton;
  }

  if (error) {
    return (
      <div
        className={`${embedded ? "" : "bg-white shadow-lg rounded-xl border border-red-100 "}p-6 lg:p-8`}
      >
        <div className="text-center">
          <div className="bg-red-50 rounded-full p-3 w-16 h-16 mx-auto mb-4">
            <ExclamationTriangleIcon className="h-10 w-10 text-red-500 mx-auto" />
          </div>
          <h3 className="text-lg font-semibold text-gray-900 mb-2">Error Loading SIM Details</h3>
          <p className="text-red-600 text-sm">{error}</p>
        </div>
      </div>
    );
  }

  // Specialized, minimal eSIM details view
  if (simDetails.simType === "esim") {
    return (
      <div
        className={`${embedded ? "" : "bg-white shadow-lg rounded-xl border border-gray-100 hover:shadow-xl transition-shadow duration-300"}`}
      >
        {/* Header */}
        <div className={`${embedded ? "" : "px-6 lg:px-8 py-5 border-b border-gray-200"}`}>
          <div className="flex flex-col sm:flex-row sm:items-center sm:justify-between space-y-3 sm:space-y-0">
            <div className="flex items-center">
              <div className="bg-blue-50 rounded-xl p-2 mr-4">
                <WifiIcon className="h-8 w-8 text-blue-600" />
              </div>
              <div>
                <h3 className="text-xl font-semibold text-gray-900">eSIM Details</h3>
                <p className="text-sm text-gray-600 font-medium">
                  Current Plan: {formatPlan(simDetails.planCode)}
                </p>
              </div>
            </div>
            <span
              className={`inline-flex px-4 py-2 text-sm font-semibold rounded-full ${getStatusColor(simDetails.status)} self-start sm:self-auto`}
            >
              {simDetails.status.charAt(0).toUpperCase() + simDetails.status.slice(1)}
            </span>
          </div>
        </div>

        <div className={`${embedded ? "" : "px-6 lg:px-8 py-6"}`}>
          <div className="grid grid-cols-1 lg:grid-cols-2 gap-8">
            <div className="space-y-6">
              <div>
                <h4 className="text-sm font-semibold text-gray-700 uppercase tracking-wider mb-4 flex items-center">
                  <DevicePhoneMobileIcon className="h-4 w-4 mr-2 text-blue-500" />
                  SIM Information
                </h4>
                <div className="bg-gray-50 rounded-lg p-4">
                  <div>
                    <label className="text-xs font-medium text-gray-500 uppercase tracking-wide">
                      Phone Number
                    </label>
                    <p className="text-lg font-semibold text-gray-900 mt-1">{simDetails.msisdn}</p>
                  </div>
                </div>
              </div>

              <div>
                <label className="text-xs font-medium text-gray-500 uppercase tracking-wide">
                  Data Remaining
                </label>
                <p className="text-2xl font-bold text-green-600 mt-1">
                  {formatQuota(simDetails.remainingQuotaMb)}
                </p>
              </div>
            </div>

            {showFeaturesSummary && (
              <div>
                <h4 className="text-sm font-semibold text-gray-700 uppercase tracking-wider mb-4 flex items-center">
                  <CheckCircleIcon className="h-4 w-4 mr-2 text-green-500" />
                  Service Features
                </h4>
                <div className="space-y-3">
                  <div className="flex justify-between items-center py-2 px-3 bg-gray-50 rounded-lg">
                    <span className="text-sm text-gray-700">Voice Mail (¥300/month)</span>
                    <span
                      className={`text-sm font-semibold px-2 py-1 rounded-full ${voiceMailEnabled ? "bg-green-100 text-green-800" : "bg-gray-100 text-gray-600"}`}
                    >
                      {voiceMailEnabled ? "Enabled" : "Disabled"}
                    </span>
                  </div>
                  <div className="flex justify-between items-center py-2 px-3 bg-gray-50 rounded-lg">
                    <span className="text-sm text-gray-700">Call Waiting (¥300/month)</span>
                    <span
                      className={`text-sm font-semibold px-2 py-1 rounded-full ${callWaitingEnabled ? "bg-green-100 text-green-800" : "bg-gray-100 text-gray-600"}`}
                    >
                      {callWaitingEnabled ? "Enabled" : "Disabled"}
                    </span>
                  </div>
                  <div className="flex justify-between items-center py-2 px-3 bg-gray-50 rounded-lg">
                    <span className="text-sm text-gray-700">International Roaming</span>
                    <span
                      className={`text-sm font-semibold px-2 py-1 rounded-full ${internationalRoamingEnabled ? "bg-green-100 text-green-800" : "bg-gray-100 text-gray-600"}`}
                    >
                      {internationalRoamingEnabled ? "Enabled" : "Disabled"}
                    </span>
                  </div>
                  <div className="flex justify-between items-center py-2 px-3 bg-blue-50 rounded-lg">
                    <span className="text-sm text-gray-700">4G/5G</span>
                    <span className="text-sm font-semibold px-2 py-1 rounded-full bg-blue-100 text-blue-800">
                      {simDetails.networkType || "5G"}
                    </span>
                  </div>
                </div>
              </div>
            )}
          </div>
        </div>
      </div>
    );
  }

  return (
    <div className={`${embedded ? "" : "bg-white shadow rounded-lg"}`}>
      {/* Header */}
      <div className={`${embedded ? "" : "px-6 py-4 border-b border-gray-200"}`}>
        <div className="flex items-center justify-between">
          <div className="flex items-center">
            <div className="text-2xl mr-3">
              <DevicePhoneMobileIcon className="h-8 w-8 text-blue-600" />
            </div>
            <div>
              <h3 className="text-lg font-medium text-gray-900">Physical SIM Details</h3>
              <p className="text-sm text-gray-500">
                {formatPlan(simDetails.planCode)} • {`${sizeLabel ?? "Unknown"} SIM`}
              </p>
            </div>
          </div>
          <div className="flex items-center space-x-3">
            {getStatusIcon(simDetails.status)}
            <span
              className={`inline-flex px-3 py-1 text-sm font-semibold rounded-full ${getStatusColor(simDetails.status)}`}
            >
              {simDetails.status.charAt(0).toUpperCase() + simDetails.status.slice(1)}
            </span>
          </div>
        </div>
      </div>

      {/* Content */}
      <div className={`${embedded ? "" : "px-6 py-4"}`}>
        <div className="grid grid-cols-1 md:grid-cols-2 gap-6">
          {/* SIM Information */}
          <div>
            <h4 className="text-sm font-medium text-gray-500 uppercase tracking-wider mb-3">
              SIM Information
            </h4>
            <div className="space-y-3">
              <div>
                <label className="text-xs text-gray-500">Phone Number</label>
                <p className="text-sm font-medium text-gray-900">{simDetails.msisdn}</p>
              </div>

              {simDetails.simType === "physical" && (
                <div>
                  <label className="text-xs text-gray-500">ICCID</label>
                  <p className="text-sm font-mono text-gray-900 break-all">{simDetails.iccid}</p>
                </div>
              )}

              {simDetails.eid && (
                <div>
                  <label className="text-xs text-gray-500">EID (eSIM)</label>
                  <p className="text-sm font-mono text-gray-900 break-all">{simDetails.eid}</p>
                </div>
              )}

              {simDetails.imsi && (
                <div>
                  <label className="text-xs text-gray-500">IMSI</label>
                  <p className="text-sm font-mono text-gray-900">{simDetails.imsi}</p>
                </div>
              )}

              {simDetails.startDate && (
                <div>
                  <label className="text-xs text-gray-500">Service Start Date</label>
                  <p className="text-sm text-gray-900">{formatDate(simDetails.startDate)}</p>
                </div>
              )}
            </div>
          </div>

          {/* Service Features */}
          {showFeaturesSummary && (
            <div>
              <h4 className="text-sm font-medium text-gray-500 uppercase tracking-wider mb-3">
                Service Features
              </h4>
              <div className="space-y-3">
                <div>
                  <label className="text-xs text-gray-500">Data Remaining</label>
                  <p className="text-lg font-semibold text-green-600">
                    {formatQuota(simDetails.remainingQuotaMb)}
                  </p>
                </div>

                <div className="flex items-center space-x-4">
                  <div className="flex items-center">
                    <SignalIcon
                      className={`h-4 w-4 mr-1 ${hasVoice ? "text-green-500" : "text-gray-400"}`}
                    />
                    <span className={`text-sm ${hasVoice ? "text-green-600" : "text-gray-500"}`}>
                      Voice {hasVoice ? "Enabled" : "Disabled"}
                    </span>
                  </div>
                  <div className="flex items-center">
                    <DevicePhoneMobileIcon
                      className={`h-4 w-4 mr-1 ${hasSms ? "text-green-500" : "text-gray-400"}`}
                    />
                    <span className={`text-sm ${hasSms ? "text-green-600" : "text-gray-500"}`}>
                      SMS {hasSms ? "Enabled" : "Disabled"}
                    </span>
                  </div>
                </div>

                {(simDetails.ipv4 || simDetails.ipv6) && (
                  <div>
                    <label className="text-xs text-gray-500">IP Address</label>
                    <div className="space-y-1">
                      {ipv4Address && (
                        <p className="text-sm font-mono text-gray-900">IPv4: {ipv4Address}</p>
                      )}
                      {ipv6Address && (
                        <p className="text-sm font-mono text-gray-900">IPv6: {ipv6Address}</p>
                      )}
                      {!ipv4Address && !ipv6Address && (
                        <p className="text-sm text-gray-500">No IP assigned</p>
                      )}
                    </div>
                  </div>
                )}
              </div>
            </div>
          )}
        </div>

        {/* Pending Operations */}
        {simDetails.pendingOperations && simDetails.pendingOperations.length > 0 && (
          <div className="mt-6 pt-6 border-t border-gray-200">
            <h4 className="text-sm font-medium text-gray-500 uppercase tracking-wider mb-3">
              Pending Operations
            </h4>
            <div className="bg-blue-50 rounded-lg p-4">
              {simDetails.pendingOperations.map((operation, index) => (
                <div key={index} className="flex items-center text-sm">
                  <ClockIcon className="h-4 w-4 text-blue-500 mr-2" />
                  <span className="text-blue-800">
                    {operation.operation} scheduled for {formatDate(operation.scheduledDate)}
                  </span>
                </div>
              ))}
            </div>
          </div>
        )}
      </div>
    </div>
  );
}